Automatic gas-extinguisher.



G. P. SCHMITT.

AUTOMATIC GAS EXTINGUISHER.

APPUcATmN FILED MAR.24.1916.

1,269.89@ Patented Das. 26, lQlt entra GEORG-E Pll'rIIllfIPll. SCHMITT,0F NEW YORK, N. Y.

AUTOMATIC GAS-EXTINGrUISI-IER.-

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application led March 24, 1916. Serial No. 86,374.

To all whom t may concern Be it known that I, GEORGE PHILIPP SoHMrr'r, acitizen of the United States, and a resident of New York, in the countyof New York and State of New York, have invented certain new and usefulImprovements in Automatic Gas-Extinguishers, of which the following is aspecification.

This invention relates to improvements in devices for extinguishing theflame of gas jets, particularly of the type used for heating, known asthe Bunsen burners.

rIhe principal object of the invention is to provide a means which willautomatically close the gas valve, when for any cause the flame becomesextinguished, thereby preventing loss of gas, and possible danger ofexplosion.

Another object is to provide such devices in forms which may be appliedto any of the ordinary type of gas burners without special diilicultyand which in no-wise interferes with their customary operation and use.

These and other objects are attained by the novel construction andcombination of parts hereinafter described and shown in the accompanyingdrawing, and in which :w-

Figure 1 is a plan view, showing a burner having the device attachedthereto. Fig. 2 is a side elevation of the same. Fig. 3 is a frontelevation, the inlet pipe being shown in section. Fig. 4 is a fragmentaledge view of the control device. Fig. 5 is a side view of the same, andFig. 6 is a fragmental perspective view showing a detail ofconstruction.

In the drawings, the numeral 10 represents the base of the burner, hereindicated to be of the well known Bunsen type, to the upper end of whichis attached an inlet pipe 11, having an ordinary form of valve 12,through which gas may be supplied from any convenient source by the pipe13.

Rising from the standard, and communieating with the pipe 11, is avertical tube 15, the same being open at the top 16, used as a burner,and which is slotted across on one side to receive the inturned end 18of the control element which is formed of two strips of metal,respectively 19 and 20, the same being of dierent heat conductingproperties, as for instance, brass welded or otherwise united to acorresponding strip of iron. These strips or tapes form the control andare coiled spirally a few times around the open end of the burner, their22, formed with ratchet teeth 23 at its lower f side, the same passingthrough an elongated aperture 24 formed in the oii'set upper end 25 of alever 26 pivoted on a horizontal post 27 the latter being rigidlyengaged with the tube 15.

The lower end of the lever 26 is turned outward, forming a toe 28,adapted to receive the point 30 of a bent valve lever 32, connected tothe stem 33 of the valve 12, and having afxed upon it a weight 34 ofsuliicient magnitude to close the valve when the lever is released fromthe toe 28.

Surrounding the post 27 is a helical coiled spring 35, one end being`engaged with the burner tube 15 and the other connecting with the lever26 in such manner as to press it forward so that the toe is normallyengaged with the valve lever.

In operation, the gas being turned on and the valve lever 32 held in itsraised position, the heat from the gas flame causes the coil control toexpand, moving the arm 22 rearwardly, causing the teeth 23 to slipthrough the slotl 24 of the lever 26, the teeth being inoperative whenmoving rearward. `When, however, the llame becomes extinguished, thecoil immediately contracts, whereupon the teeth 23 engage with the arm25, moving the lever 26 in such manner that the toe is disconnected fromthe point of the valve lever, allowing the valve lever 32 to drop byreason of the weight 34 and close the valve thereby cutting @E the gassupply.

From the foregoing it will be observed that a similar construction canbe arranged for other forms of gas jets as well as for the Bunsen type,therefore, it is not desired to be strictly held to the exactconstruction shown, as modifications can be made within the scope of theclaims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a device of the class described, the combination with a standard,an inlet pipe connected therewith, a valve in said inlet pipe, and avertical burner tube engaged with said standard remote from said valve,of an expansible coil passing through said burner, an arm extendingtherefrom, a post attached to said burner tube parallel with said armwhen the latter is in a normal position, a lever pivoted on said post,means combined with said arm adapted to actuate said lever when movingin one direction, a second lever operatively engaged with the stem ofsaid valve, a weight adjustable thereon, and means combined with saidarm adapted to hold the valve lever in a raised position when in anormal position.

2. In a device of the class described, the combination with a standard,a gas supply pipe entering said standard, a valve in said gas pipe, anda vertical burner tube on said standard remote from said valve, of aplurally coiled control comprised of two dierent metals engaged at thetop of said burner tube having a part entered therein, an arm formedwith said control extending laterally outward, a ratchet pawl pivoted tosaid arm, a lever pivoted to said vertical tube, having its upper endengageable with said pawl, a second lever operatively combined with saidvalve having a part engageable with the lower end of the first mentionedlever, means for depressing said second lever when free, said meansbeing adjustable, and means combined with the iirst mentioned lever forholding the valve lever in a normally open position.

Signed at New York, in the county of New York, and State of New York,this 14th day of March, 1916.

GEORGE PHILIPP SCHMITT.

Copies of this patent may be obtained for ve cents each, by addressingthe "Commissioner of Patents, Washington, D. G.

